tryggth / cdt

Causal Dynamical Triangulations

Tools and code for Causal Dynamical Triangulations

See Dynamically Triangulating Lorentzian Quantum Gravity for background

• dataviz.nb - Mathematica file to convert CDT output files into nice movies
• SurfaceOfResolution.m - Mathematica Algorithms for dataviz.nb
• gr.nb - Symbolically compute the Einstein tensor
• 2p1-fixed-boundaries-old - modified by David Kamensky to support open/fixed boundary conditions. Inherets bugs from older code. (LISP)
• 2p1-fixed-boundaries - Updated version of 2p1 to incorporate David Kamensky's modifications. Merger performed by Jonah Miller. (LISP)
• 2p1 - 2+1 spacetime code (LISP)
• 3p1 - 3+1 spacetime code (LISP)
• HL - Horava-Lifshitz code (LISP)
• runlisp.sh - A shell script to run Lisp jobs on Sun Grid Engine using 'qsub runlisp.sh'

2p1 and 3p1 code by @rajesh-kommu Rajesh Kommu

HL (Horava-Lifshitz) code by Christian Anderson

2p1-fixed-boundaries by @Yurlungur Jonah Miller

• Merge 2p1 and 2p1-fixed-boundaries. The updated code is called 2p1-fixed-boundaries. Works for open or periodic boundary conditions.
• Fixed Christian's code to run on Sun Grid Engine

A C++ implementation of CDT using CGAL for explicit geometry, CDT++ is being developed here.